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Special Characters

Q. I notice confusion in publication in regard to whether a space should precede and/or follow relation signs. My suspicion
is that it is <10 km but p < .001.

A. That’s right: there is no space after a relation sign when it acts as a modifier (e.g., for all quantities
<10 km), but there is space on both sides when it acts as a verb (e.g., for all quantities such that p < .001).